Figure 7.

Time course of chloroplast mobility after mechanical stimulation. A, Chloroplasts are divided into three groups with respect to their locations before mechanical stimulation: those located in the basal region (a), in the stimulus region (b), and in the apical region (c). Each region is 50 μm in length. B, Distances over which chloroplasts moved were measured in these three regions every hour during for 0 to 6 h after stimulation. The numbers of chloroplasts analyzed were: 14 (a), 23 (b), 17 (c), and 63 (control). Data were obtained from five protonemata. Control data from unstimulated cells are presented as a line with a se bar in each graph.